This is my 3rd fire got it roaring stovetop came up to 300* cat gauge said active. Closed bybass. Left thermostat on 4. Turned fans on medium/ low. Stovetop temp hanging around 300* cat gauge seems to creep up. I am using bought kiln dried wood. New insulated lined 35 foot interior chimney 8 inch around. Why can it get it up? Does cat need break in process ? Will performance get better with the more fires that get burned?